On Thu, Aug 15, 2019 at 4:08 PM Warner Losh wrote: > > > On Fri, Aug 2, 2019 at 5:04 PM Warren Toomey wrote: > >> On Fri, Aug 02, 2019 at 06:49:19PM -0400, Jim Carpenter wrote: >> > On 8/2/19 4:14 PM, Warren Toomey wrote: >> > > Hi all, I'm chasing the Youtube video of the PDP-7 at Bell Labs where >> > > people are using it to draw circuit schematics. >> > >> > A Bell Labs video? The only Bell Labs video I remember seeing that had >> > someone doing circuit schematics had it being done on a PDP-5. The -7 >> was >> > shown later doing music stuff. (That's the -7 that I thought maybe Unix >> > started life on.) >> >> Thanks Jim, Is it this one? >> https://www.youtube.com/watch?v=iwVu2BWLZqA >> >> They mention a Graphics-1 device, so maybe I'm getting this confused >> with the PDP-7 and the Graphics-2. >> > > The early one for the circuit simulator is definitely on a PDP-5 and I > presume the Graphics-1 display. You can see the PDP 5 letters on one of the > cabinets. How do you know that the music was composed on the PDP-7 that > appears from 9:20-10:30? Cool paper tape feeding sequence, though, you > gotta admit :) (well, unless you waited for far too many of those to run > back in the day). > Oh! I've found the right set of photos to make a good case this is a PDP-7... https://docs.google.com/presentation/d/1lNmjaJhuqKSbpDU96sc3Kia3d-Ag0DVylMzW6APdWEY/edit?usp=sharing has an early version of a slide I'll be using in my talk next month. Comments? Warner